The Worm Shaft, cataloged under National Stock Number 3040-00-351-2209, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Yale Industrial Products, Inc. Div Duff Norton Company. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-351-2209 |
| Primary Part Number | SK-2020-166 |
| Item Name | Worm Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Yale Industrial Products, Inc. Div Duff Norton Company |
| Status | ACTIVE |
| Shaft Location | BOTH ENDS OF WORM |
| Worm Body Length | 3.875 INCHES NOMINAL IN |
| Material Document and Classification | FED STD 66,AISI/SAE 1141 FED STD SINGLE MATERIAL RESPONSE |
| Worm Pitch Diameter | 0.500 INCHES NOMINAL IN |
| Worm Outside Diameter | 2.500 INCHES NOMINAL IN |
| Straight Unthreaded Section Diameter | 1.623 INCHES NOMINAL SECOND END SECOND PORTION IN |
| Straight Unthreaded Section Diameter | 1.749 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Section Diameter | 2.500 INCHES NOMINAL SECOND END FIRST PORTION IN |
| Unthreaded Section Pin Hole Diameter | 0.5000 INCHES NOMINAL FIRST END FIRST PORTION IN |
| End Similarity | NOT IDENTICAL |
| Surface Treatment | LEAD |
| Worm Helix Angle | 4 DEG 1 MIN |
| Material | STEEL COMP 1141 |
| Worm Thread Quantity | 1 |
| Worm Thread Direction | RIGHT-HAND |
| Worm Pressure Angle in Deg | 10.000 |
| Worm Body Tapered Bearing Surface End | NOT PROVIDED |
| Straight Unthreaded Length | 1.500 INCHES NOMINAL FIRST END FIRST PORTION IN |
| Straight Unthreaded Length | 1.688 INCHES NOMINAL SECOND END SECOND PORTION IN |
| Straight Unthreaded Length | 2.562 INCHES NOMINAL SECOND END FIRST PORTION IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SK-2020-166 PRIMARY | Yale Industrial Products, Inc. Div Duff Norton Company (USA) |
NSN 3040-00-351-2209 is a Worm Shaft, manufactured by Yale Industrial Products, Inc. Div Duff Norton Company, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-351-2209 has 1 manufacturer part number on file: SK-2020-166 (Yale Industrial Products, Inc. Div Duff Norton Company).
Key specifications for SK-2020-166: Shaft Location: BOTH ENDS OF WORM; Worm Body Length: 3.875 INCHES NOMINAL IN; Material Document and Classification: FED STD 66,AISI/SAE 1141 FED STD SINGLE MATERIAL RESPONSE; Overall Length: 10.562 INCHES NOMINAL IN. 20 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.